1680D, 100% ballistic nylon bonded to a waterproof membranePadded laptop compartment fits up to 17\” laptopInterior pocket with key clip and zipper closureTwo interior slip pocketsRoll top closure with adjustable straps and side release plastic fastenersSturdy top grab handleLarge exterior flap pocket with hook and loop closureExterior pocket on flap with zipper closureSide-entry security pocket with zipper closure at wearer\’s back leftSecure mesh water bottle pocketsAdjustable padded strapsComfort mesh padded back, sturdy padded bottom 15.5\”H x 11\”W x 4.5\”DCapacity: 12.6L